Ribosomes both prokaryotes as well as eukaryotes

1. RIBOSOMES
Prokaryotes & Eukaryotes
Lokesh S.
I-M.sc., Applied Microbiology,
Sacred Heart college(Autonomous),
Tirupattur (Dt).

2. Ribosomes:
What?
Ribosomes are Ribo
nuclic proteins.
A non membrane bound
structure.
• palade in 1955
These are considered as

3. Structure:
Present in all types of cells.
Consist of 3 sites
• A site- Aminoactyl t- RNA
binding site
• P site- Peptide transfer
site
• E site- Exit site

4. Prokaryotic ribosomes Vs Eukaryotic ribosomes

5. Functions of Ribosomes:
• Ribosomes are a cell
structure that makes
protein.
• Protein is needed for many
cell functions such as
repairing damage or
directing chemical
processes.
• Ribosomes can be found
floating within the
cytoplasm or attached to
the endoplasmic reticulum.
• The location of the
ribosomes in a cell
determines what kind of
protein it makes

6. CONTINUE...
• If the ribosomes are floating freely throughout the cell, it will
make proteins that will be utilized within the cell itself.
• When ribosomes are attached to endoplasmic reticulum, it is
referred to as rough endoplasmic reticulum or rough ER.
Proteins made on the rough ER are used for usage inside the
cell or outside the cell.
• Proteins are an essential part of all cells. Both eukaryotes
and prokaryotes require protein to function and carry out daily
activities. For this reason, ribosomes are extremely important
for the survival of living things.